Churches: climate, cracks and heating in view
Humidity, temperature, cracks and occupancy in the church, measured continuously instead of checked now and then. The organ and the frescoes stay in range, the heating runs when people are there, and the record for the diocese writes itself.
- Crack width 0.8mm
- Crypt humidity 58%
- CO₂ crypt 620ppm
What goes wrong quietly.
Cracks nobody sees move
A plaster tell-tale on the north wall says a crack is moving, but not when, how fast, or after which weather. By the time the sexton notices, the winter is over.
A climate that swings with every service
A full nave in January pushes humidity up in minutes, and the organ, the frescoes and the altar wood take it in. The next drying-out comes with the heating, which is the other extreme.
A grant application with no data behind it
The heritage office asks for a year of readings. What exists is a notebook in the sacristy with entries from the days someone remembered.
Questions you would ask on site.
Three situations from this industry, answered the way baiond answers: the readings, the reasons, a recommendation and the source. Tap one or type your own.
Checked Crack + climate sensors · baiond Gateway · Space System How did baiond know?
- Sensor
- baiond Gateway
- Space System
- AI agent
The sensor reports to the baiond Gateway, the Space System puts the reading in context (location, threshold, history), and the AI agent turns it into an answer.
Source: Crack + climate sensors · baiond Gateway · Space System
- Crack width 0.8mm
- Crypt humidity 58%
- CO₂ crypt 620ppm
Yes, all values are stable. The crack sensor reads a constant 0.8 mm with no movement for 30 days. The crypt is at 14.2 °C and 58 % humidity, inside the ideal range for historic frescoes (50–60 %), and ventilation is good at 620 ppm CO₂.
Maintain regular monitoring. No action needed.
Would you like me to investigate further?
Looking closer. This is what the data shows:
Possible reasons- The crack has not responded to the last two frost nights; the masonry appears settled.
- Crypt humidity has held between 55 and 59 % since the ventilation schedule was changed in March.
- No service or event in the crypt in the last 48 hours, so the readings are the building's own.
The sensor reports to the baiond Gateway, the Space System puts the reading in context (location, threshold, history), and the AI agent turns it into an answer.
- Sensor
- baiond Gateway
- Space System
- AI agent
Source: Crack + climate sensors · baiond Gateway · Space System
Understood. I keep watching Parish church · North facade + crypt and let you know if anything changes.
Checked Humidity sensor at the organ · baiond Gateway · Space System How did baiond know?
- Sensor
- baiond Gateway
- Space System
- AI agent
The sensor reports to the baiond Gateway, the Space System puts the reading in context (location, threshold, history), and the AI agent turns it into an answer.
Source: Humidity sensor at the organ · baiond Gateway · Space System
- Organ loft 38%
- Target 50–60%
- Below since 14h
No. Humidity at the organ has fallen to 38 %, well below the 50–60 % agreed with your organ builder, and has been below the range for 14 hours. The wood is drying too fast, which risks the pipes going out of tune and the wind chest cracking.
Lower the loft heating by two degrees now and switch on the humidifier at the organ. Keep the portal closed until the service begins.
Would you like me to investigate further?
Looking closer. This is what the data shows:
Possible reasons- The heating has run continuously since 17:30 yesterday, three hours longer than on other Saturdays.
- Outdoor air is at −6 °C and very dry; every ventilation cycle brings dry air in.
- The loft is 4 °C warmer than the nave; warm air holds moisture, so relative humidity drops fastest there.
The sensor reports to the baiond Gateway, the Space System puts the reading in context (location, threshold, history), and the AI agent turns it into an answer.
- Sensor
- baiond Gateway
- Space System
- AI agent
Source: Humidity sensor at the organ · baiond Gateway · Space System
Understood. I keep watching Parish church · Organ loft and let you know if anything changes.
Checked People counter + air quality sensor · baiond Gateway · Space System How did baiond know?
- Sensor
- baiond Gateway
- Space System
- AI agent
The sensor reports to the baiond Gateway, the Space System puts the reading in context (location, threshold, history), and the AI agent turns it into an answer.
Source: People counter + air quality sensor · baiond Gateway · Space System
- People in nave 412
- CO₂ 1650ppm
- Humidity 71%
The nave holds 412 people right now, the highest count this year. CO₂ has climbed to 1650 ppm and humidity to 71 %; both are above the range you set for the frescoes (50–60 %) but not yet critical for the building. Without ventilation they are likely to keep rising for about the next 40 minutes.
Open the tower flaps for ten minutes after the sermon. After the service, keep the heating low for two hours so the walls do not dry out too quickly.
Would you like me to investigate further?
Looking closer. This is what the data shows:
Possible reasons- The portal counter registered 412 entries since 21:50, twice the usual Sunday attendance.
- Humidity follows the count almost exactly: 400 people breathe out about 20 litres of water an hour.
- The ventilation flaps in the tower have been closed since the storm warning in November.
The sensor reports to the baiond Gateway, the Space System puts the reading in context (location, threshold, history), and the AI agent turns it into an answer.
- Sensor
- baiond Gateway
- Space System
- AI agent
Source: People counter + air quality sensor · baiond Gateway · Space System
Understood. I keep watching Parish church · Nave, Christmas Eve and let you know if anything changes.
Answers are generated by AI, may contain mistakes and use example values. Please don’t enter personal data. Privacy
Where the sensors sit.
Every dot is a sensor family in its typical place. Select one to see what it measures and what baiond does with it.
baiond puts small wireless sensors where the church is sensitive: crack gauges on the masonry, climate sensors at the organ, behind the altar and in the crypt, a counter at the portal. Every reading goes to the baiond Gateway and into one platform, where the parish sees the whole building on a phone. When a value leaves its range, the sexton or the building officer gets a message with the reading, the likely cause and the next step. Ask in plain words, and the answer comes with its source.
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The wall that never sees the sun: crack sensors on the known fissures track even fine movement, so the plaster tell-tale no longer has to be read by hand.
Sensor page: Crack Monitoring -
Humidity and temperature at the pipes and the bellows. A dry loft after a heating run, a damp one in a wet autumn: both reach the sexton early, not the organ builder first.
Sensor page: Humidity -
Frescoes and the altar sit where the heating starts. The sensor shows how fast the choir warms before a service and whether the climate stays inside the band the conservator set.
Sensor page: Temperature -
Anonymous counting at the porch: how many came to Christmas Eve, how many on a Tuesday. Numbers for the parish council and for the capacity limits at big services.
Sensor page: People Counting -
Door contacts on the sacristy and the side door. An open door at night or a window left ajar in winter is a message, not a discovery the next morning.
Sensor page: Presence & Access -
The dampest room in the building. Humidity and temperature below the choir show when the walls take up water and whether the dehumidifier is keeping up.
Sensor page: Humidity
- Sensors
- baiond Gateway
- Space System
- AI Agents
- Graph Builder
- You
The same site, run differently.
A plaster tell-tale, checked when someone thinks of it.
Crack width as a curve, with the weather that moved it.
The organ builder finds the damage at the next tuning.
A message the evening the loft humidity leaves its range.
The heating runs on the timer, full church or empty.
Heating that follows the service and the people in it.
A grant application with a notebook as evidence.
Twelve months of readings, exported in a few clicks.
In use at and in partnership with
Your industry guide
One PDF for your industry: the questions baiond answers there, the sensors that measure it and what changes on site.
What managers ask before they start.
Can I see the crack on the north wall without climbing a ladder?
Yes. A crack sensor on the masonry reports even small changes in width at regular intervals, straight to your phone. You see the curve over weeks and the weather that went with it, and you get a message when movement exceeds the value you set.
What humidity is right for the organ, and does baiond keep it there?
Organ builders usually ask for a stable range, often around 50 to 60 percent relative humidity, and above all no fast swings. baiond measures at the organ itself and alerts you when the value or the rate of change leaves the range you set with your organ builder. Whether it controls a humidifier or the heating depends on what is installed; the Gateway speaks the common building protocols.
Do the sensors damage the historic fabric?
No. The sensors are small, battery-powered and wireless, so no cables run through the walls. Crack sensors are fixed the way a tell-tale is; climate sensors sit on a shelf, a ledge or the organ case. Placement is agreed with your heritage authority.
Can the heating follow the services instead of the timer?
Yes. The counter at the portal and the climate sensors tell the platform when people are in the nave and how the temperature responds. The heating can then run for the service, not for the empty afternoon, and you see the effect per month.
Does it count who comes to church?
It counts how many, never who. The people counter reports numbers, not images or identities, so the data is anonymous from the start. Congregation sizes and visitor peaks are still useful for heating, cleaning and grant reports.
Can I hand the readings to the heritage office as a report?
Yes. Every reading is stored with time and place. You export the period the office asks for as a PDF or a table, with the ranges and the events marked, in a few clicks rather than an afternoon.
Related industries
Same sensors, same questions, a different floor.
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